Street-by-Street Mobility Design

The pre-fire street network in Lahaina was organized around a single primary spine, Front Street, running along the coast, with numerous dead-end residential streets branching inland. This configuration was lethal. When the fire advanced on August 8, 2023, residents on dead-end streets were funneled back toward corridors already blocked by flames or gridlocked with evacuating traffic. The proposed mobility network replaces this single-spine-with-dead-ends pattern with a five-corridor grid, each street designed for a specific function and connected through multiple cross-links so that no residence is ever more than one turn from two independent escape routes.

The New Boulevard (Highway 30 Conversion)

The primary circulation spine of the proposed plan converts the existing Highway 30 corridor from a pass-through highway into an urban boulevard. This is the single most consequential infrastructure move in the proposal: it shifts the town’s organizational axis from the vulnerable coastal edge to a more resilient inland position.

The boulevard carries a multi-modal cross-section: two vehicular travel lanes in each direction, separated by a bioswale median that manages stormwater while providing a planted buffer. Protected bike lanes run on both sides, physically separated from vehicle traffic by raised curbs. Wide sidewalks, minimum 12 feet, accommodate pedestrian movement and ground-floor commercial frontage.

Every neighborhood street connects to the boulevard, eliminating the dead-end conditions that proved fatal during the fire. At the northern and southern edges, the boulevard provides multiple exit points to regional routes, inverting the pre-fire condition where Front Street’s coastal position limited escape options. Ground-level commercial uses activate the streetscape, with residential units above, creating the density and mixed-use character needed to sustain a walkable town center while distributing population along a safer corridor.

Coastal Promenade (Front Street)

Front Street, historically the commercial heart of Lahaina, is reimagined as a pedestrian-priority coastal promenade. Vehicular traffic is removed except for emergency vehicle access, which is maintained through a minimum clear width compliant with fire apparatus requirements.

The 1.8-mile promenade stretches from Mala Wharf at the northern end to Puamana Beach Park at the southern, linking the town’s most significant heritage sites along a continuous public walkway: the Banyan Tree, the Mokuʻula restoration site, historic churches, and the harbor. Native coastal plantings replace the ornamental landscaping that characterized pre-fire Front Street, and integrated stormwater management channels rainfall toward bioretention areas rather than directly into the ocean.

A minimum 20-foot width per ADA accessibility standards ensures that the promenade functions for all users, wheelchair access, service vehicles, and emergency response, while maintaining the pedestrian character that makes the space a destination rather than a corridor. The promenade serves double duty as the town’s primary public space and its coastal monitoring edge, with design features that accommodate future sea level rise adaptation.

Lahaina Luna Avenue

Lahaina Luna Avenue is strengthened as the primary north-south connector between upland neighborhoods and the coast. The street links directly to Lahainaluna High School, founded in 1831 and listed on the National Register of Historic Places, anchoring it as both a daily commute route and a cultural corridor.

The design widens travel lanes and improves intersection geometry at key crossings with the boulevard and Wainee Street. But its most critical function is evacuation: Lahaina Luna Avenue provides the most direct connection from the coastal zone to upland areas. When coastal routes are compromised, by fire, flooding, or future sea level events, this corridor offers a straight path to higher ground. The intersection improvements are designed specifically to prevent the bottleneck conditions that turned the 2023 evacuation deadly.

Kahoma Boulevard

Kahoma Boulevard is an entirely new north-south corridor that follows the Kahoma Stream riparian zone. It creates a seam between the redensification zone on its town side and the riparian buffer on its stream side, development frontage faces the boulevard, while the opposite edge transitions into a vegetated stream corridor with native plantings and restored wetland areas.

Stream crossings are limited to maintain ecological corridor continuity for both water flow and habitat. The boulevard is designed as a second parallel spine to the main boulevard, ensuring that no single corridor carries all north-south traffic. This redundancy is fundamental to the proposal’s safety logic: if any one corridor is blocked, the parallel spine absorbs the load.

Development along Kahoma Boulevard is oriented to take advantage of the stream landscape, units face both the active street and the green corridor, creating a double frontage condition that increases property value while protecting the ecological asset.

Wainee Street

Wainee Street runs below the boulevard, marking the boundary between the coastal buffer zone and the residential district. It is designed as a low-speed local street with pedestrian priority, shared-space principles keep vehicle speeds below 15 mph, and the streetscape is continuous with the sidewalk rather than separated by curbs.

Wainee provides waterfront access for residents and emergency vehicle routes to coastal areas without requiring travel on the boulevard or promenade. Its intersections with Lahaina Luna Avenue and Kahoma Boulevard create clear inland escape routes, three points where a resident moving along the coast can turn directly uphill toward higher ground and regional exits.

Network Redundancy: The Critical Difference

The pre-fire network was a single spine with many dead ends. The proposed network is a grid of five corridors with multiple cross-connections. This is not an aesthetic preference, it is a life-safety requirement.

In the pre-fire condition, a fire blocking Front Street at any point trapped everyone south of the blockage with no alternative route. Dead-end streets compounded this by forcing residents to reverse direction and merge onto already-gridlocked corridors. The result was a fatal bottleneck.

In the proposed network, every residence has a minimum of two independent egress routes, meaning two paths that do not share any common segment. If the boulevard is blocked, residents reach Kahoma Boulevard or Lahaina Luna Avenue. If a coastal route is compromised, inland corridors remain clear. Emergency vehicles can travel between community hubs via the boulevard without navigating narrow residential streets, maintaining response times even during evacuation events.

The five-corridor system, boulevard, promenade, Lahaina Luna, Kahoma, and Wainee, eliminates trap points entirely. No dead ends. No single points of failure. No street that, if blocked, leaves anyone without a way out.